Final answer:
The area of the bladder formed by the two ureteral orifices and the urethral orifice is known as the trigone.
Step-by-step explanation:
The area of the bladder that is formed by the two ureteral orifices and the urethral orifice is known as the trigone. The trigone is a triangular-shaped area at the base of the bladder and is marked by the ureters in the posterior-lateral aspect and the urethra in the anterior aspect.